Di Lucaro
[ 02 / Philosophy ]

How we build.

The difference between a demo and a system is what happens at the edges. These are the principles we apply to every engagement.

Reliability patterns from firmware

01

Half of our practice comes from electronics, firmware, and financial markets infrastructure. State machines, circuit breakers, watchdog timers, and checkpointing aren't AI buzzwords here — they're patterns from systems that had to keep running. AI systems need the same discipline.

State machinesCircuit breakersCheckpointing

Evaluation-first design

02

If you can't measure it, you can't ship it. Every system begins with the eval that defines success — golden sets, regression gates, production scoring. Demos pass once; evaluations pass forever.

Golden setsRegression gatesOnline scoring

Failure-aware AI

03

Hallucinations, drift, prompt injection, and edge cases are design constraints, not surprises. Guardrails belong in the architecture, not bolted on after a postmortem.

GuardrailsFallbacksReplay

Retrieval quality > model size

04

Hybrid search, re-ranking, and good chunking beat bigger models in production. Most wins come from the data pipeline — BM25 plus pgvector, reciprocal rank fusion, cross-encoder reranking — not the parameter count.

Hybrid searchRe-rankingIndexing

Compound reliability

05

A 95% step in a 5-step pipeline is 77% end-to-end. We design with the chain in mind, not the demo. Every component carries its own error budget.

SLOsError budgetsChain analysis

Human in the loop, by design

06

Confidence thresholds, review queues, and override paths are part of the product — not an admin afterthought. Trust is built by what the system refuses to do.

Review queuesConfidence routingOverrides
[ Engagements ]

How we work together

AI architecture
System design, retrieval strategy, evaluation plan, and technical direction for teams building AI products.
Build
Production RAG, document intelligence pipelines, agentic workflows, and the integration work between them.
Audit
Reliability reviews of existing AI systems: retrieval quality, prompts, evals, observability, and failure modes.